#include <pthread.h>
#include <unistd.h>
#include <stdio.h>
/* 執行緒控制塊 */
static pthread_t tid1;
static pthread_t tid2;
/* 函式返回值檢查 */
static void check_result(char* str,int result)
{
	if (0 == result)
	{
		printf("%s successfully!\n",str);
	}
	else
	{
		printf("%s failed! error code is %d\n",str,result);
	}
}
/* 執行緒1入口函式 */
static void* thread1_entry(void* parameter)
{
	int i;
	for (i = 0;i < 3;i++) /* 迴圈列印3次資訊 */
	{
		printf("thread1 run count: %d\n",i);
		sleep(2); /* 休眠2秒 */
	}
	printf("thread1 exited!\n");
	return NULL;
}
/* 執行緒2入口函式*/
static void* thread2_entry(void* parameter)
{
	int count = 0;
	void* thread1_return_value;
	/* 阻塞等待執行緒1執行結束 */
	pthread_join(tid1, NULL);
	/* 執行緒2列印資訊開始輸出 */
	while(1)
	{
		/* 列印執行緒計數值輸出 */
		printf("thread2 run count: %d\n",count ++);
		sleep(2); /* 休眠2秒 */
	}
	return NULL;
}
/* 使用者應用入口 */
int application_init()
{
	int result;
	/* 建立執行緒1,屬性為預設值，分離狀態為預設值joinable,
	* 入口函式是thread1_entry，入口函式引數為NULL */
	result = pthread_create(&tid1,NULL,thread1_entry,NULL);
	check_result("thread1 created",result);
	/* 建立執行緒2,屬性為預設值，分離狀態為預設值joinable,
	* 入口函式是thread2_entry，入口函式引數為NULL */
	result = pthread_create(&tid2,NULL,thread2_entry,NULL);
	check_result("thread2 created",result);
	return 0;
}
int main()
{
	int i ;
	application_init();
	i=10;
	do{
		sleep(1);
	}while(i--);
}

 

執行結果：

-bash-3.2$ gcc join.c -pthread -o app
-bash-3.2$ ./app
thread1 created successfully!
thread2 created successfully!
thread1 run count: 0
thread1 run count: 1
thread1 run count: 2
thread1 exited!
thread2 run count: 0
thread2 run count: 1
thread2 run count: 2